GB1295870A - Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate - Google Patents

Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate

Info

Publication number
GB1295870A
GB1295870A GB6213269A GB6213269A GB1295870A GB 1295870 A GB1295870 A GB 1295870A GB 6213269 A GB6213269 A GB 6213269A GB 6213269 A GB6213269 A GB 6213269A GB 1295870 A GB1295870 A GB 1295870A
Authority
GB
United Kingdom
Prior art keywords
terephthalate
hydroxyethyl
bis
purification
beta
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB6213269A
Inventor
Yataro Ichikawa
Michiyuki Tokashiki
Nobuo Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GB5789668A external-priority patent/GB1204430A/en
Application filed by Teijin Ltd filed Critical Teijin Ltd
Priority to GB6213269A priority Critical patent/GB1295870A/en
Publication of GB1295870A publication Critical patent/GB1295870A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/60—Separation; Purification; Stabilisation; Use of additives by treatment giving rise to chemical modification
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1295870 Bis-hydroxyethyl terephthalate TEIJIN Ltd 19 Dec 1969 62132/69 Addition to 1204430 Heading C2C The invention comprises a modification of the process for the purification of bis-hydroxyethyl terephthalate described and claimed in the parent Specification in which the crude or purified bis-hydroxyethyl terephthalate is contacted with hydrogen in the presence of a hydrogenation catalyst at least before or at least after the precipitation step and in which the bishydroxyethyl terephthalate is either in molten form or in dissolution or dispersion in an aromatic compound which is liquid at room temperature or other optional inert liquid media.
GB6213269A 1968-12-05 1969-12-19 Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate Expired GB1295870A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB6213269A GB1295870A (en) 1968-12-05 1969-12-19 Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5789668A GB1204430A (en) 1968-12-05 1968-12-05 PROCESS FOR THE PURIFICATION OF CRUDE BIS-(beta-HYDROXYETHYL)TEREPHTHALATE
GB6213269A GB1295870A (en) 1968-12-05 1969-12-19 Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate

Publications (1)

Publication Number Publication Date
GB1295870A true GB1295870A (en) 1972-11-08

Family

ID=10487897

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6213269A Expired GB1295870A (en) 1968-12-05 1969-12-19 Process for the purification of crude bis-(beta-hydroxyethyl)terephthalate

Country Status (1)

Country Link
GB (1) GB1295870A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114746391A (en) * 2019-12-20 2022-07-12 嘉尔宝有限责任公司 Process for purifying bis (2-hydroxyethyl) terephthalate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114746391A (en) * 2019-12-20 2022-07-12 嘉尔宝有限责任公司 Process for purifying bis (2-hydroxyethyl) terephthalate

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee